Do blue light glasses really work? What an eye specialist says | VERIFY

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As you enjoy the tail-end of your winter holidays, it will be back to work at the start of the New Year for many. Some of you might have made it a New Year's resolution to complete more work. However, sitting at your desk and working at a computer can strain your eyes. Some swear that blue light glasses improve their sight while working.

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Yeah, because she is wearing glasses with no tint, those reduce blue light only minimally (by about 10% maximum). Glasses with yellow tint reduce blue light by about 50%, those with orange tint by even more than that and those with red tint can block 100% of blue light (as well as azure and green light, i.e. a bit longer wavelengths than just blue). You can measure it with a spectrometer, if you place such a device near a computer screen, you will see peaks at the red, green, and blue wavelengths, but if you filter the light from the screen through blue light blocking glasses with a dark red tint, you will see it blocking 100% of the blue and green wavelengths and only letting through the red wavelengths. So this video is not true at all.

ElCapitanCZ